Study on flushing phenomena generated by microwave heating

Yamaki, Tatsunori*; Kaneko, Akiko*; Abe, Yutaka*; Segawa, Tomoomi ; Kawaguchi, Koichi  ; Yamada, Yoshikazu 

In Japan, the microwave heating method is adopted in the conversion process of reprocessing facility for spent fuels of a nuclear reactor. When the scale-up of the conversion process is considered, visualization observation of flushing phenomena by microwave heating was experimented in order to optimize the structure of denitration containers depending on the scale of throughput. Evaluation of the effects of the diameter of a container, initial level of liquid, and microwave power on the conditions for the generation of flusing was conducted, and it was clarified that the mechanism of the generation of flushing and dominant factor.